Loan & Mortgage Calculator
The Loan & Mortgage Calculator helps you understand the true cost of borrowing money. Whether you are financing a home, a car, a personal loan, or any other large purchase, this calculator breaks down exactly what you will pay every month, how much of that goes to interest versus your actual balance, and what the loan costs you in total from start to finish.
How it works: The calculator uses a standard amortization formula to determine your fixed monthly payment. Each payment covers two things simultaneously — a portion that reduces your principal balance and a portion that pays the interest charged for that month. In the early years of a loan the majority of each payment goes toward interest. As the balance shrinks over time, the interest portion decreases and more of each payment goes toward the principal. This process is called amortization.
Variables explained:
Loan Amount (Principal) — This is the total amount of money you are borrowing before any interest is applied. For a mortgage it is the purchase price of the home minus your down payment. For a personal or auto loan it is simply the amount you need to borrow.
Annual Interest Rate (APR) — The Annual Percentage Rate is the yearly cost of borrowing expressed as a percentage of the outstanding loan balance. This rate is divided by 12 to calculate the interest charge applied to your balance each month. Even a small difference in rate — say 6% versus 7% — can mean tens of thousands of dollars over the life of a 30-year mortgage.
Loan Term (Years) — The number of years you have agreed to repay the loan. Choosing a longer term lowers your monthly payment because you are spreading the cost over more payments, but it significantly increases the total interest you pay over the life of the loan. A shorter term raises your monthly payment but saves a substantial amount in interest.
Monthly Payment — The fixed amount you pay each month for the entire duration of the loan. This never changes on a fixed-rate loan regardless of how interest rates move in the broader market.
Total Interest Paid — The sum of all interest charges across every single payment for the full loan term. This is the true cost of borrowing beyond what you originally received. On a 30-year mortgage at a moderate interest rate, total interest paid can easily exceed the original loan amount.
Total Cost of Loan — The principal plus every dollar of interest paid. This is the real amount the purchase ultimately costs you when financed.
Amortization Schedule — A month-by-month table showing exactly how each payment is split between principal and interest and what your remaining balance is after every payment. It reveals how slowly your balance decreases in the early years versus the rapid paydown in the final years.
Tips: Making even one extra payment per year — applied entirely to principal — can cut years off a 30-year mortgage and save a significant amount in interest. When comparing loan offers, always compare the APR rather than just the interest rate, as APR includes fees that affect the true cost of borrowing.
Debt Payoff Calculator
The Debt Payoff Calculator is designed for anyone carrying balances on credit cards, personal loans, medical bills, or any combination of debts. It calculates exactly how long it will take to become completely debt-free, how much interest you will pay along the way, and in what order you should attack your debts to achieve the best possible outcome.
How it works: You enter each debt individually with its current balance, interest rate, and minimum payment. The calculator then simulates your monthly payments forward in time, applying the avalanche or snowball strategy you select, until every balance reaches zero.
Variables explained:
Balance — The total amount you currently owe on a given debt right now. Use your most recent statement balance for accuracy.
APR (Annual Percentage Rate) — The yearly interest rate the lender charges on the outstanding balance. Credit card APRs are commonly between 18% and 29%. This rate is divided by 12 to calculate the interest charge added to your balance each month you carry a balance.
Minimum Payment — The smallest amount the lender requires you to pay each month to keep the account current. Paying only the minimum on high-interest debt means the majority of your payment goes to interest rather than reducing the balance, which is why debts can feel impossible to pay off when only paying minimums.
Extra Monthly Payment — Any amount you can commit to paying above and beyond the sum of all your minimum payments. Even a modest extra payment — $50 or $100 per month — has a dramatic effect on your total interest paid and payoff timeline. This money is directed at the target debt according to your chosen strategy.
Avalanche Strategy — You pay minimums on all debts and direct every extra dollar toward the debt with the highest interest rate. Once that debt is paid off, the freed-up payment rolls into the next highest-rate debt. This strategy minimizes the total interest you pay and is the mathematically optimal approach.
Snowball Strategy — You pay minimums on all debts and direct every extra dollar toward the debt with the smallest balance, regardless of interest rate. Once the smallest debt is gone, that full payment rolls into the next smallest. This strategy provides quick psychological wins by eliminating debts completely one by one, which many people find motivating enough to stay on track.
Payoff Order — The sequence in which your debts will reach a zero balance based on your chosen strategy and extra payment amount. The calculator shows you each individual payoff date so you can see exactly when each debt will be gone.
Tips: The best strategy is the one you will actually stick to. If eliminating a small debt quickly will motivate you to keep going, the snowball may be worth the extra interest. If discipline is not an issue, the avalanche saves the most money. Either way, any extra payment dramatically outperforms making only the minimums.
Compound Interest Calculator
The Compound Interest Calculator shows you one of the most powerful forces in personal finance — the ability of money to grow on itself over time. It is equally useful for understanding how savings and investments grow and how debt can spiral if left unchecked. The visual chart makes the exponential nature of compound growth immediately clear in a way that numbers alone cannot.
How it works: Compound interest means you earn interest not only on your original deposit but also on every dollar of interest that has previously been added to your balance. Over long periods this creates exponential rather than linear growth. The calculator projects your balance year by year and separates what you contributed personally from what growth added on top.
Variables explained:
Starting Amount (Principal) — The initial lump sum you are depositing or investing today. Even a small starting amount benefits significantly from long time horizons.
Annual Interest Rate — The rate at which your money grows each year, expressed as a percentage. For savings accounts this may be a guaranteed rate. For investments it represents your expected average annual return. The S&P 500 has historically averaged approximately 10% annually before inflation, or about 7% when adjusted for inflation.
Number of Years — The length of time your money will grow. Time is the single most powerful variable in compound growth. Starting 10 years earlier can more than double your final balance even if you contribute the same amount each year.
Annual Contribution — Additional money added each year on top of the starting amount. Regular contributions are the second most powerful lever after time. Even modest annual additions — the equivalent of setting aside $200 per month — compound into very large sums over decades.
Compounding Frequency — How often interest is calculated and added to your balance. Options include annually, quarterly, monthly, and daily. More frequent compounding produces slightly faster growth because interest begins earning its own interest sooner. Monthly compounding is the most common for savings accounts and investment accounts.
Future Value — The total projected value of your investment at the end of the time period, including all contributions and all accumulated growth.
Total Contributed — The sum of your starting amount plus all annual contributions. This is the money you personally put in with no growth applied.
Interest Earned — The difference between the future value and your total contributions. This is the money growth added on top of your own deposits — money you earned without working for it.
Rule of 72 — A simple mental shortcut: divide 72 by your annual interest rate to estimate how many years it takes for your money to double. At 7% your money doubles roughly every 10.3 years. At 10% it doubles every 7.2 years.
Tips: The most important action you can take is to start as early as possible. The growth in the final years of a long investment horizon dwarfs everything that came before it. Consistency — investing the same amount every month regardless of market conditions — is generally more important than trying to time the market.
Budget & Cash Flow Calculator
The Budget and Cash Flow Calculator gives you a clear, honest picture of where your money goes every month. By comparing your take-home income to your actual monthly expenses across six common spending categories, it calculates your net cash flow, your savings rate, and whether your current spending habits are putting you on track or falling behind. A visual spending chart makes the breakdown immediately easy to understand.
How it works: You enter your monthly take-home income and the amounts you spend in each expense category. The calculator totals your expenses, subtracts them from your income, and expresses the result both as a dollar amount and as a savings rate percentage. It then compares your savings rate to commonly recommended benchmarks.
Variables explained:
Take-Home Income (Net Income) — The amount of money that actually hits your bank account each month after all taxes and payroll deductions have been taken out. This is your real spending power — not your gross salary. If you are paid biweekly, multiply one paycheck by 26 and divide by 12 to get your monthly net income.
Housing / Rent — Your monthly rent or mortgage payment. If you own a home, include your full mortgage payment including any property taxes and homeowner’s insurance that are escrowed into the payment. A widely used guideline suggests housing should not exceed 28 to 30 percent of gross income.
Transportation — Everything related to getting around. This includes car payments, auto insurance, gasoline, parking, tolls, public transit passes, and routine maintenance. Transportation is often the second-largest expense category after housing.
Food / Groceries — All money spent on food including grocery store purchases, restaurant meals, takeout, coffee shops, and food delivery services. Many people underestimate this category significantly — tracking actual spending for one month often reveals surprise.
Utilities / Bills — Recurring monthly bills including electricity, gas, water, internet, phone, and subscription services such as streaming platforms, software subscriptions, and gym memberships.
Entertainment — Discretionary spending on leisure, hobbies, clothing, personal care, gifts, and other non-essential purchases.
Debt Payments — Monthly payments on any debt not captured elsewhere — credit card minimum payments, student loans, personal loans, or medical payment plans. Mortgage and car payments are typically entered under Housing and Transportation.
Net Cash Flow — Your income minus all expenses. A positive number means you are spending less than you earn. A negative number means you are spending more than you earn and going deeper into debt or drawing down savings each month.
Savings Rate — Your net cash flow expressed as a percentage of your take-home income. Financial planners commonly recommend a savings rate of 15 to 20 percent or higher. A savings rate below 10 percent leaves very little margin for emergencies or long-term wealth building.
50/30/20 Rule — A popular budgeting framework suggesting roughly 50 percent of net income go toward needs (housing, food, utilities, transportation), 30 percent toward wants (entertainment, dining out, hobbies), and 20 percent toward savings and debt repayment above the minimums.
Tips: The first step to improving a budget is simply knowing where the money goes. Many people find that tracking actual spending for 30 days reveals expenses they had forgotten about or consistently underestimated. Once you know the numbers, look for the largest discretionary categories first — even modest reductions there can meaningfully improve your savings rate.
Retirement Calculator
The Retirement Calculator projects how much money you will have saved by your target retirement age and whether that amount can sustain your lifestyle throughout retirement. It combines your existing savings, your ongoing monthly contributions, and the power of compound investment growth over the years remaining before you retire. The resulting chart shows your projected balance building year by year from your current age to retirement.
How it works: The calculator compounds your current savings and regular monthly contributions at your expected annual return, month by month, until you reach your retirement age. It then applies the widely used 4% Rule to estimate how much you could safely withdraw per month without depleting your savings over a 30-year retirement.
Variables explained:
Current Age — Your age today. The number of years between your current age and your retirement age is your investment horizon — the single most important factor in the projection. Every additional year you have before retirement multiplies the growth significantly.
Retirement Age — The age at which you plan to stop working and begin drawing from your savings. Common targets are 62, 65, and 67, though retiring earlier is increasingly popular. Earlier retirement means a shorter accumulation period and a longer drawdown period, both of which require a larger nest egg.
Current Savings — The total amount you have already saved across all retirement accounts including 401(k), IRA, Roth IRA, brokerage accounts, or any other long-term savings. This is your starting balance for the projection.
Monthly Contribution — The amount you add to your retirement savings every month. For most people this includes payroll contributions to a 401(k) plus any employer match. Increasing your contribution rate even by one or two percent can add tens of thousands of dollars to your final balance over a long career.
Expected Annual Return — The average annual growth rate you expect your investments to achieve. A diversified portfolio of stocks and bonds has historically returned approximately 7 percent per year after adjusting for inflation over long periods. More conservative portfolios with a higher bond allocation typically project lower returns. This number has a dramatic impact on the final result, so it is worth running the calculation at a few different rates to see the range of outcomes.
Projected Nest Egg — The estimated total value of your retirement savings on the day you retire, based on your current savings, monthly contributions, years to retirement, and expected return.
Total Contributed — The sum of your current savings plus all future monthly contributions between now and retirement. This is the money you personally deposit — everything above this amount is investment growth working on your behalf.
4% Rule — A guideline developed from long-term historical market data suggesting that retirees can withdraw 4 percent of their nest egg in the first year of retirement, then adjust that amount for inflation each subsequent year, with a high probability of the money lasting at least 30 years. Dividing the projected nest egg by 25 gives you the same figure as applying the 4% rule.
Monthly Withdrawal Estimate — Your projected nest egg multiplied by 4 percent, then divided by 12. This is the monthly income your savings could sustainably provide in retirement according to the 4% Rule, before accounting for Social Security or any other income sources.
Tips: If the monthly withdrawal figure falls short of your target retirement income, your best levers are increasing your monthly contribution, delaying your retirement age by even a few years, or both. Social Security benefits — which are not included in this calculation — will add meaningfully to your monthly retirement income for most people.
BMI & BMR Calculator
The BMI and BMR Calculator gives you two foundational numbers for understanding your body and setting realistic health goals. Your BMI provides a rough screening of body composition relative to height and weight. Your BMR and TDEE tell you how many calories your body actually needs each day, which is the essential starting point for any nutrition strategy.
Variables explained:
BMI (Body Mass Index) — A number calculated from height and weight used to broadly categorize body composition. A BMI under 18.5 is considered underweight. Between 18.5 and 24.9 is considered normal weight. Between 25 and 29.9 is overweight. 30 and above is classified as obese. BMI is a useful population-level screening tool but does not account for muscle mass, bone density, or body fat distribution. A muscular athlete may have a high BMI without excess body fat.
BMR (Basal Metabolic Rate) — The number of calories your body burns each day at complete rest — the minimum energy needed to keep your heart beating, lungs breathing, and organs functioning. This calculation uses the Mifflin-St Jeor equation, which is considered the most accurate formula for estimating BMR for most adults.
TDEE (Total Daily Energy Expenditure) — Your BMR multiplied by an activity factor to account for how physically active you are. TDEE represents the total number of calories your body actually burns in a typical day including all movement and exercise. Eating at your TDEE maintains your current weight. Eating below it results in weight loss. Eating above it results in weight gain.
Activity Level — A multiplier applied to your BMR ranging from 1.2 for a sedentary lifestyle to 1.9 for an extremely active one. Choosing the right activity level is important for an accurate TDEE — most desk workers fall in the sedentary to lightly active range even if they exercise a few times per week.
Calorie Targets by Goal — Based on your TDEE the calculator suggests four daily calorie targets: a moderate deficit for gradual weight loss, a larger deficit for faster weight loss, maintenance, and a modest surplus for building muscle. A deficit of 500 calories per day produces approximately one pound of weight loss per week.
Note: BMI and calorie calculations are general estimates for informational purposes. Individual metabolic rates vary. Please consult a healthcare professional before making significant changes to your diet or exercise routine.
Tip Calculator
The Tip Calculator makes it fast and simple to calculate the right tip for any service and split the total bill fairly among any number of people. It includes quick-select buttons for common tip percentages so you can get an answer in seconds without doing any mental math.
Variables explained:
Bill Total — The subtotal shown on your receipt before any tip is added. If tax has already been added to the bill, you can choose to tip on the pre-tax subtotal or the total with tax — both are reasonable and the difference is usually small.
Tip Percentage — The percentage of the bill you want to leave as a gratuity. 15 percent is generally considered the minimum for satisfactory service. 18 to 20 percent is standard for good service in a sit-down restaurant. 20 percent and above is appropriate for excellent service. Some restaurants automatically add an 18 to 20 percent gratuity for large parties — always check your receipt before adding an additional tip.
Number of People — How many people are sharing the bill. The calculator divides the total — bill plus tip — evenly by this number to give each person their exact share. If your group wants to tip different percentages or split unevenly, calculate each portion separately.
Tip Amount — The dollar value of the gratuity based on the bill total and tip percentage you entered.
Total Bill — The original bill plus the tip amount. This is the full amount that needs to be paid.
Per Person — The total bill divided evenly by the number of people in your group. This is the exact amount each person should contribute.
Tipping customs vary by country and type of service. The percentages above reflect common US restaurant standards. Always use your own judgment based on the quality of service received.
Unit Converter
The Unit Converter handles the most common everyday measurement conversions across four categories — length, weight, temperature, and volume. It converts in real time as you type and displays all available conversions for your entered value simultaneously, so you can see the full picture at a glance without having to run multiple separate conversions.
Variables explained:
Length — Converts between meters, kilometers, miles, feet, inches, centimeters, and yards. Useful for travel, construction, exercise tracking, and any situation where you encounter a measurement system different from the one you use daily.
Weight — Converts between kilograms, grams, pounds, ounces, metric tons, and stones. Useful for cooking, shipping, fitness tracking, and interpreting product specifications from different countries.
Temperature — Converts between Celsius, Fahrenheit, and Kelvin. Celsius is the standard in most of the world. Fahrenheit is used primarily in the United States. Kelvin is the scientific absolute temperature scale where zero represents the complete absence of thermal energy.
Volume — Converts between liters, milliliters, gallons, quarts, cups, fluid ounces, and cubic feet. Useful for cooking, fuel efficiency, and comparing product sizes across different regional packaging standards.
From / To — Select the unit you are starting with and the unit you want to convert to. The calculator also displays all other available conversions for the same value simultaneously, which is useful when you need to compare across multiple units at once.
All conversions use standard internationally recognized conversion factors. Temperature conversions use exact formulas rather than approximations.